flex and seal plumbing repair

Don...in the past I've used black abs cement to fix damaged sewer pipes. You need to clean pipe with abs cleaner first, then add a thin coat of ABS black cement. While still wet, add a proper sized piece of fiberglass screen (same as screen in RV door) into the wet cement. Let dry, then add another thin layer over the screen, let dry. Over night dry time may be needed for a large crack. Three thin coats, until you can no longer see any screen should do it. I've never had a failure, using this method.

Jerry